GB/T 9074.31-2017 in English
VALIDConical spring washers for assemblies
- Issued on:2017-12-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$78.00
| Standard No: | GB/T 9074.31-2017 |
| Document status: | VALID |
| Title in English: | Conical spring washers for assemblies |
| Title in Chinese: | 组合件用锥形弹性垫圈 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-12-29 |
| Implemented on: | 2018-04-01 |
| ICS Classification: | 21.060.30-Washers, locking elements |
| Chinese Classification: | J13-Fastener |
| Professional Classification: | GB-National Standard |
| Related Keywords: | conical spring washers
conical elastic washers elastic washers assemblies introduction gb/t application conical |
| Related Topics: | elastic washer
elastic mat GB/T 9074.31 GB/T 9074.31-2017 Spring washer hardness |
《GB/T 9074.31-2017组合件用锥形弹性垫圈》由TC85（全国紧固件标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
GB/T 9074.31—2017 Standard Overview
This part is one of the national standards of the "Fastener Assemblies" series, which mainly regulates the type, size, technical conditions and marking of conical elastic washers. It is applicable to conical elastic washers used with bolts or screws of performance grades 8.8 and 10.9.
Background and significance of standard formulation
With the development of the machinery industry, the requirements for fasteners are increasing. The formulation of the GB/T 9074 series of standards aims to unify the technical requirements of assemblies and ensure their reliability and consistency in different application scenarios. Conical elastic washers are widely used in machinery, automobiles, construction and other fields due to their excellent anti-loosening performance.
Technical Conditions and Material Requirements
| Item | Parameter | |
|---|---|---|
| Maximum value | Minimum value | |
| d1（nominal） | 2.35mm | 2.25mm |
| d2（nominal） | 6mm | 5.70mm |
| S（Thickness） | 0.55mm | 0.45mm |
Actual Application Case Analysis
Take M8 bolts as an example. When using conical elastic washers, ensure that their nominal size is 7.55mm. This type of washer is suitable for bolts or screws with performance grades of 8.8 and 10.9.
Comparative analysis of standard frameworks
| Comparison dimensions | ||
|---|---|---|
| GB/T 9074.31 | Scope of application | Conical elastic washers (M2.5 to M12) |
| Material requirements | ||
| Spring steel | Hardness range | 420HV~490HV |
Implementation suggestions
- Selection points: Select matching conical elastic washers according to the performance grade of the bolt or screw.
- Installation precautions: Ensure that the gasket is placed correctly to avoid anti-loosening failure due to wrong direction.
- Maintenance: Regularly check the gasket for deformation and wear, and replace it in time to ensure the reliability of the connection.
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